Objective:Based on the quality analysis of Nauclea officinalis in different growth years and different months in the same year,the most suitable harvest year and the specific month in the same year were determined acc...Objective:Based on the quality analysis of Nauclea officinalis in different growth years and different months in the same year,the most suitable harvest year and the specific month in the same year were determined according to the evaluation of the active components in the stem of medicinal parts of Nauclea officinalis.Methods:LC-MS/MS method was used to investigate the quality of Nauclea officinalis from different growth years and different months in the same year,mainly including the content determination of the active ingredients in the medicine.Results:With the prolongation of production life,the content of active ingredients in stem of Nauclea officinalis increased continuously.After reaching a certain number of years,the content of active ingredients increased little;In the middle of the same year,from mid-October to mid-June of the next year,the content of iso-vincin lactam was relatively high,especially between the end of March and the end of May.The content was high and stable,and the highest point was the stem sample collected in May.Conclusion:The content of each component in the stem of Nauclea officinalis with a growth life of more than 5 years has reached a relatively high and stable level.Nauclea officinalis with a growth life of more than 5 years should be collected as raw materials for medicinal materials.The month with high and stable content of isocyanoside lactam,namely May of each year,was taken as the best harvest time of gallbladder in one year.The best harvest time was from mid-October to mid-June of the next year,or from March to May of each year.展开更多
The pace of construction of new large scale systems for the Chinese government at all levels slowed in 2006 compared to 2005. However, the size of related investments reached RMB 35.81 billion according to an IDC ... The pace of construction of new large scale systems for the Chinese government at all levels slowed in 2006 compared to 2005. However, the size of related investments reached RMB 35.81 billion according to an IDC report that forecast and analyzed China's e-government solution market for the 2007-11 period.……展开更多
Cinte Techtextil China 2010 will return to Shanghai from October 19th–21st, presenting opportunities for China’s ever-growing nonwovens and technical textiles industries. What’s about the status quo of the technica...Cinte Techtextil China 2010 will return to Shanghai from October 19th–21st, presenting opportunities for China’s ever-growing nonwovens and technical textiles industries. What’s about the status quo of the technical textile industry in China in the first half year of展开更多
Panax notoginseng is famous for its important therapeutic effects. Saponins are bioactive compounds found in different parts and developmental stages of P. notoginseng plants. Thus, it is urgently to study saponins di...Panax notoginseng is famous for its important therapeutic effects. Saponins are bioactive compounds found in different parts and developmental stages of P. notoginseng plants. Thus, it is urgently to study saponins distribution in different parts and growth ages of P. notoginseng plants. In this study,potential biomarkers were found, and their chemical characteristic differences were revealed through metabolomic analysis. High-performance liquid chromatography data indicated the higher content of saponins(i.e., Rg1, Re, Rd, and Rb1) in the underground parts than that in the aerial parts. 20(S)-Protopanaxadiol saponins were mainly distributed in the aerial parts. Additionally, the total saponin content in the 3-year-old P. notoginseng plant(188.0 mg/g) was 1.4-fold higher than that in 2-year-old plant(130.5 mg/g). The transcriptomic analysis indicated the tissue-specific transcription expression of genes, namely, PnFPS, PnSS, PnSE1, PnSE2, and PnDS, which encoded critical synthases in saponin biosyntheses. These genes showed similar expression patterns among the parts of P. notoginseng plants.The expression levels of these genes in the flowers and leaves were 5.2 fold higher than that in the roots and fibrils. These results suggested that saponins might be actively synthesized in the aerial parts and transformed to the underground parts. This study provides insights into the chemical and genetic characteristics of P. notoginseng to facilitate the synthesis of its secondary metabolites and a scientific basis for appropriate collection and rational use of this plant.展开更多
基金Major science and technology planning project of Hainan province(No.ZDKJ201805)。
文摘Objective:Based on the quality analysis of Nauclea officinalis in different growth years and different months in the same year,the most suitable harvest year and the specific month in the same year were determined according to the evaluation of the active components in the stem of medicinal parts of Nauclea officinalis.Methods:LC-MS/MS method was used to investigate the quality of Nauclea officinalis from different growth years and different months in the same year,mainly including the content determination of the active ingredients in the medicine.Results:With the prolongation of production life,the content of active ingredients in stem of Nauclea officinalis increased continuously.After reaching a certain number of years,the content of active ingredients increased little;In the middle of the same year,from mid-October to mid-June of the next year,the content of iso-vincin lactam was relatively high,especially between the end of March and the end of May.The content was high and stable,and the highest point was the stem sample collected in May.Conclusion:The content of each component in the stem of Nauclea officinalis with a growth life of more than 5 years has reached a relatively high and stable level.Nauclea officinalis with a growth life of more than 5 years should be collected as raw materials for medicinal materials.The month with high and stable content of isocyanoside lactam,namely May of each year,was taken as the best harvest time of gallbladder in one year.The best harvest time was from mid-October to mid-June of the next year,or from March to May of each year.
文摘 The pace of construction of new large scale systems for the Chinese government at all levels slowed in 2006 compared to 2005. However, the size of related investments reached RMB 35.81 billion according to an IDC report that forecast and analyzed China's e-government solution market for the 2007-11 period.……
文摘Cinte Techtextil China 2010 will return to Shanghai from October 19th–21st, presenting opportunities for China’s ever-growing nonwovens and technical textiles industries. What’s about the status quo of the technical textile industry in China in the first half year of
基金supported by grants from the National Natural Science Foundation of China(No.81603238)
文摘Panax notoginseng is famous for its important therapeutic effects. Saponins are bioactive compounds found in different parts and developmental stages of P. notoginseng plants. Thus, it is urgently to study saponins distribution in different parts and growth ages of P. notoginseng plants. In this study,potential biomarkers were found, and their chemical characteristic differences were revealed through metabolomic analysis. High-performance liquid chromatography data indicated the higher content of saponins(i.e., Rg1, Re, Rd, and Rb1) in the underground parts than that in the aerial parts. 20(S)-Protopanaxadiol saponins were mainly distributed in the aerial parts. Additionally, the total saponin content in the 3-year-old P. notoginseng plant(188.0 mg/g) was 1.4-fold higher than that in 2-year-old plant(130.5 mg/g). The transcriptomic analysis indicated the tissue-specific transcription expression of genes, namely, PnFPS, PnSS, PnSE1, PnSE2, and PnDS, which encoded critical synthases in saponin biosyntheses. These genes showed similar expression patterns among the parts of P. notoginseng plants.The expression levels of these genes in the flowers and leaves were 5.2 fold higher than that in the roots and fibrils. These results suggested that saponins might be actively synthesized in the aerial parts and transformed to the underground parts. This study provides insights into the chemical and genetic characteristics of P. notoginseng to facilitate the synthesis of its secondary metabolites and a scientific basis for appropriate collection and rational use of this plant.
